Term · Accounting & Data Quality
XBRL
In briefXBRL is a machine-readable standard format for financial reports in which financial statement items are tagged in order to be read out and compared automatically. In the EU it is the basis for the European Single Electronic Format (ESEF) for capital-market-oriented companies.
Definition
XBRL (eXtensible Business Reporting Language) is a standardized, machine-readable format for the electronic submission of financial reports. Individual financial statement items are given defined tags from a taxonomy, so that they can be read out and compared automatically. In the EU, the format is the basis for the European Single Electronic Format (ESEF).
Why it matters for small caps
For smaller issuers, machine-readable reporting lowers the hurdle to comparing metrics automatically and increases data quality. However, errors in tagging can lead to incorrect analyses if items are assigned imprecisely.
Common misreadings
- XBRL data is regarded as automatically error-free, even though incorrect or company-specific tags can impair comparability.
In the process
Frequently asked
What is the connection between XBRL and ESEF?
ESEF is the electronic reporting format prescribed by the EU for annual financial reports. It uses XBRL tagging to make the financial statements machine-readable.
Must small companies use XBRL?
The obligation depends on capital-market orientation and the respective reporting regime. For issuers listed on a regulated market, ESEF generally applies in the EU.
What sources of error exist in tagging?
Above all, incorrectly assigned or self-extended tags that deviate from the standard taxonomy. They can distort automated comparisons.
Related terms
Sources
Primary
ESMA – European Single Electronic Format (ESEF)
https://www.esma.europa.eu/issuer-disclosure/electronic-reporting
https://www.esma.europa.eu/issuer-disclosure/electronic-reporting
Education only, not investment advice. Ranges and thresholds are didactic orientation values, not an official standard.